I've played other MMOs that let you trade items to someone else as long as you haven't left the instance. Seems pretty reasonable. At a bare minimum, let people pass AFTER they've already Need/Greed-ed. Just in case they messed up. As for a "want but don't really care" option... the chances that 3-7 other players would use that is like 0%. That is exactly what GREED is for.